Question

Lucy earns 52 dollars each week working part-time at a bookstore. She earns one additional dollar for each book that she sells.

Let 'A' be the amount (in dollars) that Lucy earns in a week if she sells 'B' books.

Write an equation relating A to B . Then use this equation to find the amount of money Lucy earns if she sells 15 books.

Answer 1

$67 earnings

Explanation:

1. Let A = $ earned for books sold

2. Let B = # of books sold

3. Let A = money earned

4. Equation: A = 52 + 1B

5. Solution: $67 = 52+ 1(15)

Answer 2

A = B + 52

Explanation:

A is the total amount each week. 52 is the initial amount that she earns each week. Then, B represents the amount of books she sells. So, 15 books can be represented by

A = 15 + 52 = 67